The ProteoPrep 20 LC Column removes 20 highly abundant proteins (95% of proteome) at 99% efficiency. http://www.sigmaaldrich.com/Area_of_Interest/Life_Science/Proteomics_and_Protein_Expr/Proteomics/Sample_Preparation/Extraction_Kits__Reagents/ProteoPrep_20_LC.html Mon, 10 Mar 2008 10:23:52 -0500 Mon, 10 Mar 2008 10:22:56 -0500 The ProteoPrep 20 LC Column removes 20 highly abundant proteins (95% of proteome) at 99% efficiency, so less fractionation of the true plasma proteome is required. http://www.sigmaaldrich.com/Area_of_Interest/Life_Science/Proteomics_and_Protein_Expr/Proteomics/Sample_Preparation/Extraction_Kits__Reagents/ProteoPrep_20_LC.html Mon, 10 Mar 2008 10:22:56 -0500